I think most of your specimens are various zeolite and related minerals from India. They are very cheap on the world market and have found their way to Brazil and other places. The first one is a stilbite possibly from the Nasik Region. Why in the world didn't you ask what they were and where they were from when you bought them?

Your M5.jpg is a quartz cast after anhydrite from Iraí, Alto Uruguai region, Rio Grande do Sul, Brazil. Probably the best specimen in the lot.

Thank you all for your help.I bought them at a tourist center, and I aksed them what they were? But they told me all are calcite minerals and I dont believe it.Samples M4 and M8 are grayish green color, some place are in yellow, they told me it was diopside? but I am not sure? and I also dont think they are zeolite minerals?Please help me if you know?Regards,Long

M2.jpe and M2-1 appear to be weathered mordenite or scolecite on stilbite, but you would have to have it checked to be sure. Probably from the Nasik or Jalgaon regions. There are thousands of quarries in India in the region of the Deccan traps. When the British were thrown out so were their forestry laws, and most of the trees have been cut down. What does that have to do with zeolites and the related species found in the Deccan traps? Well, if you cut down most of the trees, you don't have anything much left to build with except the basalt of the Deccan traps to use as building material, so you make a little quarry or tow or three near every town and a surprising percentage of these will produce specimens. The population density in India is quite high so there are a huge number of quarries. Many of which don't even have names.

Because of the high population density, a lot of water is needed for drinking and washing. Again what does this have to do with mineral specimens. The wells in this part of India are not like the wells we are familiar with in the west. They are often at least twenty or more feet across and will extend down into the basalt fifty or more feet, well below the water table. The basalt is slowly permeable and water from the basalt below the water level will gradually fill these wells. The recharge time is somewhat variable, but in digging/blasting these wells, sometimes very large pockets zeolite and related minerals are encountered.

M4.jpg and M4-1.jpg appear to be severely weathered stilbite. Possibly from the Nasik region. The quarries near Pune and Bombay usually produce white stilbite. Some one from Brazil must have bought a lot of the cheapest rubbish possible and sent it to Brazil for tourists. I really do like to try and help newbies but after about the 1000th time doing so and usually they get pissed of when you tell them the truth, you start to wonder why you are wasting your time. Yes, I'm getting to be a grouchy old man.

Thank you Mr. Currier for your explaination, they are very usefull to me.I also bought some more specimens at the same place (S1, S2, S5 Brasil). Samples number S3 and S4 from China? Could you please feel free to let me know, what they are?Regards,Long

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